Function getEquivalence

packages/effect/src/Either.ts:313–321

({ left, right }: {
  right: Equivalence.Equivalence<A>
  left: Equivalence.Equivalence<E>
})

 * @since 2.0.0
 */
export const getEquivalence = <A, E>({ left, right }: {
  right: Equivalence.Equivalence<A>
  left: Equivalence.Equivalence<E>
}): Equivalence.Equivalence<Either<A, E>> =>
  Equivalence.make((x, y) =>
    isLeft(x) ?
      isLeft(y) && left(x.left, y.left) :
      isRight(y) && right(x.right, y.right)
  )

/**
 * @category mapping